SW8000514_CURRENT PERMIT_20001013

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW&OL'9V4
DOC TYPE
q7P CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
oOU2/0%6
YYYYMMDD
kL

State of North Carolina
Department of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Division of Water Quality
October 13, 2000
i M •
____
NCDENK
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RF-50URCE5
Mr Bill Grathwol, Manager
Coswald, LLC
PO Box 3215
- Wilmington, NC 28406-
Subject Permit No SW8 000514
Coastal Carolina Commercial Site
High Density Stormwater Project
New Hanover County
Dear Mr Grathwol
The Wilmington Regional Office received a complete Stormwater Management Permit Application for Coastal
Carolina Commercial Site on September 14, 2000 Staff review of the plans and specifications has determined that
the project, as proposed, will comply with the Stormwater Regulations set forth in Title 15A NCAC 2H 1000 We
are forwarding Permit No SW8 000514 dated October 13, 2000, for the construction of Coastal Carolina
Commercial Site
This permit shall be effective from the date of issuance until October 13, 2010, and shall be subject to the conditions
and limitations as specified therein Please pay special attention to the Operation and Maintenance requirements
in this permit Failure to establish an adequate system for operation and maintenance of the stormwater management
system will result in future compliance problems
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an
adjudicatory hearing upon written request within thirty (30) days following receipt of this permit This request must
be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed
with the Office of Administrative Hearings, P O Drawer 27447, Raleigh, NC 27611-7447 Unless such demands
are made this permit shall be final and binding
If you have any questions, or need additional information concerning this matter, please contact Linda Lewis, or
me at [phone]
Sincerely,
Rick Shiver
Water Quality Regional Supervisor
RSS/arl S 1WQSISTORMWATIPERMIT1000514 OCT
cc Phil Tripp, P E
Tony Roberts, New Hanover County Inspections
Beth Easley, New Hanover County Engineering
Linda Lewis
Wilmington Regional Office
Central Files
127 Cardinal Dr Ext, Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper

State Stormwater Management Systems
Permit No SW8 000514
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and
other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Coswald, LLC
Coastal Carolina Commercial Site
New Hanover County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with the provisions of 15A NCAC
2H 1000 (hereafter referred to as the "stormwater rules') and the approved stormwater management plans and
specifications and other supporting data as attached and on file with and approved by the Division of Water Quality
and considered a part of this permit
This permit shall be effective from the date of issuance until October 13, 2010 and shall be subject to the following
specified conditions and limitations
I DESIGN STANDARDS
1 This permit is effective only with respect to the nature and volume of stormwater described in the
application and other supporting data
2 This stormwater system has been approved for the management of stormwater runoff as described on page
3 of this permit, the Project Data Sheet The stormwater control has been designed to handle the runoff from
1,029,250 square feet of impervious area This pond must be operated with a 50' vegetated filter
3 Approved plans and specifications for this project are incorporated by reference and are enforceable parts
of the permit
4 The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per
approved plans No built -upon area is permitted to be constructed under this permit
5 The built -upon area for the future development is limited to 1,029,250
6 The runoff from the first inch of rain from all onsite and offsite built -upon area permitted with this project
must be directed into the permitted stormwater control system
P]

State Stormwater Management Systems
Permit No SW8000514
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Project Name
Permit Number
Location
Applicant
Mailing Address
Application Date
Name of Receiving Stream/Index #
Classification of Water Body
If Class SA, chloride sampling results
Pond Depth, feet
Permanent Pool Elevation, FMSL
Drainage Area, acres
Total Impervious Surfaces, ft2
Offsite Area entering Pond, ft2
Required Surface Area, ft2
Provided Surface Area, ftZ
Required Storage Volume, ft'
Provided Storage Volume, ft'
Temporary Storage Elevation, FMSL
Controlling Orifice
Coastal Carolina Commercial Site
SW8 000514
New Hanover County
Mr Bill Grathwol, Manager
Coswald, LLC
PO Box 3215
Wilmington, NC 28406
September 14, 2000
Howe Creek / (CFR 18-87-23)
"SA ORW" (outside the 575' AEC)
25 ppm
5
39
31 79
1,029,250 (all future)
none, per Engineer
54,232
55,440
91,696
152,831
41 5
4 25" (� pipe
i

State Stormwater Management Systems
Permit No S W 8 000514
II. SCHEDULE OF COMPLIANCE
The stormwater management system shall be constructed in it's entirety, vegetated and operational for its
intended use prior to the construction of any built -upon surface
2 During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired
immediately
3 The permittee shall at all times provide the operation and maintenance necessary to assure the permitted
stormwater system functions at optimum efficiency The approved Operation and Maintenance Plan must
be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited
to
a Semiannual scheduled inspections (every 6 months)
b Sediment removal
c Mowing and revegetation of side slopes
d Immediate repair of eroded areas
e Maintenance of side slopes in accordance with approved plans and specifications
f Debris removal and unclogging of outlet structure, orifice device and catch basins and piping
g Access to the outlet structure must be available at all times
h The vegetated filter will be kept grassed with no erosion The spreader mechanism will be kept free
of sediment and trash, and must distribute the runoff evenly over the width of the filter
4 Records of maintenance activities must be kept and made available upon request to authorized personnel
of DWQ The records will indicate the date, activity, name of person performing the work and what actions
were taken
5 Decorative spray fountains will not be allowed in the stormwater treatment system
6 The facilities shall be constructed as shown on the approved plans This permit shall become voidable unless
the facilities are constructed in accordance with the conditions of this permit, the approved plans and
specifications, and other supporting data
7 Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of
this permitted facility, a certification must be received from an appropriate designer for the system installed
certifying that the permitted facility has been installed in accordance with this permit, the approved plans
and specifications, and other supporting documentation Any deviations from the approved plans and
specifications must be noted on the Certification
If the stormwater system was used as an Erosion Control device, it must be restored to design condition prior
to operation as a stormwater treatment device, and prior to occupancy of the facility
9 A modification must be permitted prior to any construction The following items will require a modification
to the permit
a Any revision to the approved plans, regardless of size
b Project name change
c Transfer of ownership
d Redesign or addition to the approved amount of built -upon area
e Further subdivision, acquisition, or sale of the project area The project area is defined as all property
owned by the permittee, for which Sedimentation and Erosion Control Plan approval was sought
f Revisions or alterations to the vegetated filter
10 The Director may determine that other revisions to the project should require a modification to the permit
n
W

` State Stormwater Management Systems
Permit No SWS 000514
11 A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum
of ten years from the date of the completion of construction
12 Prior to the sale of any portion of the property, an access/maintenance casement to the stormwater facilities
shall be granted in favor of the permittee if access to the stormwater facilities will be restricted by the sale
of any portion of the property
13 No construction of built -upon area may occur until a permit modification is submitted and issued
14 The Director may notify the permittee when the permitted site does not meet one or more of the minimum
requirements ofthe permit Within the time frame specified in the notice, the permittee shall submit a written
time schedule to the Director for modifying the site to meet minimum requirements The permittee shall
provide copses of revised plans and certification in writing to the Director -that the changes have been made
15 The permittee shall notify the Division of any name, ownership or mailing address changes within 30 days
III. GENERAL CONDITIONS
This permit is not transferable In the event there is a desire for the facilities to change ownership, or there
is a name change of the Permittee, a formal permit request must be submitted to the Division of Water
Quality accompanied by an application fee, documentation from the parties involved, and other supporting
materials as may be appropriate The approval of this request will be considered on its merits and may or
may not be approved
Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to
enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute
143-215 6A to 143-215 6C
The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules,
regulations, or ordinances which may be imposed by other government agencies (local, state, and federal)
which have jurisdiction
4 In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions,
the Permittee shall take immediate corrective action, including those as may be required by this Division,
such as the construction of additional or replacement stormwater management systems
5 The permittee grants DENR Staff permission to enter the property for the purpose of inspecting all
components of the permitted stormwater management facility
6 The permit may be modified, revoked and reissued or terminated for cause The filing of a request for a
permit modification, revocation and reissuance or termination does not stay any permit condition
7 Unless specified elsewhere, permanent seeding requirements for the stormwater control must follow the
guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual
Permit issued this the 13th day of October, 2000
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Kerr T Stevens, Director
7 Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 000514
E

State Stormwater Management Systems
Permit No SW8 000514
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and
other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Coswald, LLC
Coastal Carolina Commercial Site
New Hanover County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with the provisions of 15A NCAC
2H 1000 (hereafter referred to as the "stormwater rules') and the approved stormwater management plans and
specifications and other supporting data as attached and on file with and approved by the Division of Water Quality
and considered a part of this permit
This permit shall be effective from the date of issuance until October 13, 2010 and shall be subject to the following
specified conditions and limitations
I DESIGN STANDARDS
This permit is effective only with respect to the nature and volume of stormwater described in the
application and other supporting data
2 This stormwater system has been approved for the management of stormwater runoff as described on page
3 of this permit, the Project Data Sheet The stormwater control has been designed to handle the runoff from
1,029,250 square feet of impervious area This pond must be operated with a 50' vegetated filter
3 Approved plans and specifications for this project are incorporated by reference and are enforceable parts
of the permit
4 The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per
approved plans No built -upon area is permitted to be constructed under this permit
5 The built -upon area for the future development is limited to 1,029,250
6 The runoff from the first inch of rain from all onsite and offsite built -upon area permitted with this project
must be directed into the permitted stormwater control system
2

State Stormwater Management Systems
Permit No SW8000514
Project Name
Permit Number
Location
Applicant
Mailing Address
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Coastal Carolina Commercial Site
SW8 000514
New Hanover County
Mr Bill Grathwol, Manager
Application Date
Name of Receiving Stream/Index #
Classification of Water Body
If Class SA, chloride sampling results
Pond Depth, feet
Permanent Pool Elevation, FMSL
Drainage Area, acres
Total Impervious Surfaces, ft2
Offstte Area entering Pond, ft2
Required Surface Area, ft2
Provided Surface Area, ft2
Required Storage Volume, ft3
Provided Storage Volume, W
Temporary Storage Elevation, FMSL
Controlling Orifice
Coswald, LLC
PO Box 3215
Wilmington, NC 28406
September 14, 2000
Howe Creek / (CFR 18-87-23)
"SA ORW" (outside the 575' AEC)
25 ppm
5
39
3179
1,029,250 (all future)
none, per Engineer
54,232
55,440
91,696
152,831
415
4 25"� pipe
3

State Stormwater Management Systems
Permit No SW8 000514
It SCHEDULE OF COMPLIANCE
The stormwater management system shall be constructed in it's entirety, vegetated and operational for its
intended use prior to the construction of any built -upon surface
2 During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired
immediately
The permittee shall at all times provide the operation and maintenance necessary to assure the permitted
stormwater system functions at optimum efficiency The approved Operation and Maintenance PIan must
be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited
to
- - ' a Semiannual scheduled inspections (every 6 months) - - - - - -
b Sediment removal
c Mowing and revegetation of side slopes
d Immediate repair of eroded areas
e Maintenance of side slopes in accordance with approved plans and specifications
f Debris removal and unclogging of outlet structure, orifice device and catch basins and piping
g Access to the outlet structure must be available at all times
h The vegetated filter will be kept grassed with no erosion The spreader mechanism will be kept free
of sediment and trash, and must distribute the runoff evenly over the width of the filter
4 Records of maintenance activities must be kept and made available upon request to authorized personnel
of DWQ The records will indicate the date, activity, name of person performing the work and what actions
were taken
5 Decorative spray fountains will not be allowed in the stormwater treatment system
6 The facilities shall be constructed as shown on the approved plans This permit shall become voidable unless
the facilities are constructed in accordance with the conditions of this permit, the approved plans and
specifications, and other supporting data
7 Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of
this permitted facility, a certification must be received from an appropriate designer for the system installed
certifying that the permitted facility has been installed in accordance with this permit, the approved plans
and specifications, and other supporting documentation Any deviations from the approved plans and
specifications must be noted on the Certification
8 If the stormwater system was used as an Erosion Control device, it must be restored to design condition prior
to operation as a stormwater treatment device, and prior to occupancy of the facility
9 A modification must be permitted prior to any construction The following items will require a modification
to the permit
a Any revision to the approved plans, regardless of size
b Project name change
c Transfer of ownership
d Redesign or addition to the approved amount of built -upon area
e Further subdivision, acquisition, or sale of the project area The project area is defined as all property
owned by the permittee, for which Sedimentation and Erosion Control Plan approval was sought
f Revisions or alterations to the vegetated filter
10 The Director may determine that other revisions to the project should require a modification to the permit
4

State Stormwater Management Systems
Permit No SW8 000514
A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum
of ten years from the date of the completion of construction
12 Prior to the sale of any portion of the property, an access/maintenance easement to the stormwater facilities
shall be granted in favor of the permittee if access to the stormwater facilities will be restricted by the sale
of any portion of the property
13 No construction of built -upon area may occur until a permit modification is submitted and issued
14 The Director may notify the permittee when the permitted site does not meet one or more of the minimum
requirements of the permit Within the time frame specified in the notice, the permittee shall submit a written
time schedule to the Director for modifying the site to meet minimum requirements The permittee shall
provide copies of revised plans and certification in writing to the Director that the changes have been made
15 The permittee shall notify the Division of any name, ownership or mailing address changes within 30 days
III GENERAL CONDITIONS
This permit is not transferable In the event there is a desire for the facilities to change ownership, or there
is a name change of the Permittee, a formal permit request must be submitted to the Division of Water
Quality accompanied by an application fee, documentation from the parties involved, and other supporting
materials as may be appropriate The approval of this request will be considered on its merits and may or
may not be approved
2 Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to
enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute
143-215 6A to 143-215 6C
3 The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules,
regulations, or ordinances which may be imposed by other government agencies (local, state, and federal)
which have jurisdiction
4 In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions,
the Permittee shall take immediate corrective action, including those as may be required by this Division,
such as the construction of additional or replacement stormwater management systems
The permittee grants DENR Staff permission to enter the property for the purpose of inspecting all
components of the permitted stormwater management facility
6 The permit may be modified, revoked and reissued or terminated for cause The filing of a request for a
permit modification, revocation and reissuance or termination does not stay any permit condition
Unless specified elsewhere, permanent seeding requirements for the stormwater control must follow the
guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual
Permit issued this the 13th day of October, 2000
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
� '�o r
Kerr Stevens, erectorr
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 000514
5

State Stormwater Management Systems
Permit No SW8 000514
Coastal Carolina Commercial Site
Stormwater Permit No SW8 000514
New Hanover County
Designer's Certification
1, , as a duly registered in
the State of North Carolina, having been authorized to observe (periodically/weekly/full time) the construction of
the project,
(Project)
for (Project Owner) hereby state that, to the best of my abiI tties, due care
and diligence was used in the observation of the project construction such that the construction was observed to be
built within substantial compliance and intent of the approved plans and specifications
The checklist of items on page 2 of this form is included in the Certification
Noted deviations from approved plans and specification
Signature
Registration Number
Date
SEAL
C1

State Stormwater Management Systems
Permit No SW8 000514
Certification Requirements
1 The drainage area to the system contains approximately the permitted acreage
2 The drainage area to the system contains no more than the permitted amount of built -upon area
3 All the built -upon area associated with the project is graded such that the runoff drains to the system
4 The outletibypass structure elevations are per the approved plan
5 The outlet structure is located per the approved plans
b Trash rack is provided on the outletibypass structure
7 All slopes are grassed with permanent vegetation
8 Vegetated slopes are no steeper than 3 1
9 The inlets are located per the approved plans and do not cause short-circuiting of the system
10 The permitted amounts of surface area and/or volume have been provided
11 Required drawdown devices are correctly sized per the approved plans
12 All required design depths are provided
13 All required parts of the system are provided, such as a vegetated shelf, and a forebay
14 The overall dimensions of the system, as shown on the approved plans, are provided
cc NCDENR-DWQ Regional Office
Tony Roberts, New Hanover County Building Inspector
7

TE 00040
Date Received
Fee Paid
Permit Number
-2-QcoD
laala
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1 Applicants name (specify the name of the corporation, individual, etc who owns the project)
Coswald LLC
2 Print Owner/Signing Official's name and title (person legally responsible for facility and compliance)
Bill Grathwol manager
3 Mailing Address for person listed in item 2 above
PO Box3215
City Wilmington State NC Zip 28406
Telephone Number 910-762-8316
Project Name 4sttbdtvtgion, facility, or establishment name — should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc )
Coastal Carolina Commercial
Y
5 Location of Project (street address)
Market Street
City _ Wilmin tg�on County New Hanover
6 Directions to project (from nearest major intersection)
approx 1200 If north -from the intersection of US Hwy 17 and SR 1403
7 Latitude N 340 16' 15" Longitude W 770 40' 00" of project
8 Contact person who can answer questions about the project
Name _ Phillip Tripp Telephone Number 910-763-5100
II. PERMIT INFORMATION:
1 Specify whether project is (check one) X New Renewal Modification
Form SWU-101 Version 3 99 Page 1 of 4

2 If this application is being submitted as the result of a renewal or modification to an existing permit, list
The existing permit number and its issue date (if known)
3 Specify the type of project (check one)
Low Density X High Density Redevelop General Permit Other
4 Additional Project Requirements (check applicable blanks)
CAMA Major X Sedimentation/Erosion Control 404//401 Permit NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748
III. PROJECT INFORMATION
I In the space provided below, summarize how stormwater will be treated Also attach a detailed narrative
(one to two pages) describing stormwater management for the project
stormwater detention pond
2 Stormwater runoff from this project drains to the Cape Fear River basin
3 Total Project Area 31 79 acres
5 How many drainage basins does the project haves 1
4 Project Built Upon Area 743 %
6 Complete the following information for each drainage area If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below
Receiving Stream Name
Receiving Stream Class
Drainage Basin Area
Existing Impervious * Area
Proposed Impervious * Area
% Impervious* Area (total)
Unnamed trib to Howe Creek
SA ORW
31 79 ac
0
23 63 ac
74 3%
'�>ri' e'rviiitis *tt��'�S�ui face Areae atlj€j'e°€g& jgEFp[ �' E'g
{ �u f ipi4fB8r�NFxNH94 j jpAFH l.SiiRIM P+flwk¢f 6�6ff Fs{ 1 1
,�pp t r�AA■�� JVMr�< I
11 F .g � �lr@Y [tMMi 1i{ �
l�rai a e
g � &S, Ng�)%�9R
On -site Buildings
358,000 sf
On -site Streets
0
On -site Parking
671,250 sf
On -site Sidewalks
0
Other on -site
0
Off -site
0
Total
E=1,029,250 sf
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking
areas sidewalks, gravel areas, etc
Form SWU-101 Version 3 99 Page 2 of

7 How was the off -site impervious area listed above derived9 NA
IV DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot If lot sizes vary significantly, a
table listing each lot number, size and the allowable built -upon area for each lot must be provided as an
attachment
The following covenants are intended to ensure ongoing compliance with state stormwater managementpermit
number as issued by the Division of Water Quality These covenants may
not be changed or deleted without the consent of the State
2 No more than square feet of any lot shall be covered by structures of impervious materials
Impervious materials include asphalt, gravel, concrete, brick stone, slate or similar material but do not include wood
decking or the water surface of swimming pools
3 Swales shall not be filled in, piped or altered except as necessary to provide driveway crossings
4 Built -upon area in excess of the permitted amount requires a state stormwater managementpermit modification prior
to construction
S Allpermittedrunoffrom outparcels orfuture development shall be directed into the permitted stormwater control
system These connections to the stormwater control system shall be performed in a manner that maintains the
integrity and performance of the system as permitted
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, that the covenants will be binding on all parties and
persons claiming under them, that they will run with the land, that the required covenants cannot be changed or
deleted without concurrence from the State, and that they will be recorded prior to the sale of any lot
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for
each BMP specified for this project Contact the Stormwater and General Permits Unit at [phone] for
the status and availability of these forms
Form SWU-102
Wet Detention Basin Supplement
Form SWU-103
Infiltration Basin Supplement
Form SWU-104
Low Density Supplement
Form SWU-105
Curb Outlet System Supplement
Form SWU-106
Off -Site System Supplement
Form SWU-107
Underground Infiltration Trench Supplement
Form SWU-108
Neuse River Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
Form SWU-101 Version 3 99 Page 3 of

VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ)
A complete package includes all of the items listed below. The complete application package should be
submitted to the appropriate DWQ Regional Office.
1 Please indicate that you have provided the following required information by initialing in the space
provided next to each item
ApphpgAt's Initials
• Original and one copy of the Stormwater Management Permit Application Form
• One copy of the applicable Supplement Form(s) for each BMP VJ
• Permit application processing fee of $420 (payable to NCDENR)
• Detailed narrative description of stormwater treatment/management
• Two copies of plans and specifications, including
- Development(Project name
- Engineer and firm
- Legend
- North arrow
- Scale
- Revision number and date
Mean high water line
Dimensioned property/project boundary
Location map with named streets or NCSR numbers
Original contours, proposed contours, spot elevations, finished floor elevations
Details of roads, drainage features, collection systems, and stormwater control measures
Wetlands delineated, or a note on plans that none exist
Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
Drainage areas delineated
Vegetated buffers (where required)
VII AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section
Designated agent (individual or firm) TrippEngineering, P C
Mailing Address 419 Chestnut Street
City Wilmington State NC Zip 28401
Phone [phone] Fax [phone]
VHL APPLICANT'S CERTIFICATION
1, (pant or type name of person listed in General Information, item 2) Bill Grathwol ,
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H 1000
Signature Date 0D
Form SWU-101 Version 3 99 Page 4 of

7 E 00040
Permit No SW8 000514
(to be provided by DWQJ
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWO Stormwater Management Plan Review
A complete stormwater management plan submittal includes a wet detention basin supplement for each basin,
design calculations, plans and specifications showing all basin and Outlet structure details, and a signed and
notarized operation and maintenance agreement
I. PROJECT INFORMATION (please complete the following information)
Project Name Coastal Carolina Commerical
Contact Person Philp Tri Phone Number ( 910 )_763-5100
For projects with multiple basins, specify which basin this worksheet applies to 1
elevations
Basin Bottom Elevation
340 ft
Permanent Pool Elevation
390 ft
Temporary Pool Elevation
41 5 ft
(floor of the basin)
(elevation of the orifice)
(elevation of the discharge structure overflow)
areas
Permanent Pool Surface Area 55,440 sq ft (water surface area at the orifice elevation)
Drainage Area
Impervious Area
volumes
Permanent Pool Volume
Temporary Pool Volume
Forebay Volume
Other parameters
SA/DA'
Diameter of Orifice
Design Rainfall
Design TSS Remova12
3179 ac (on -site and off -site drainage to the basin)
23 63 _ ac (on -site and off -site drainage to the basin)
223,650 _ cu ft (combined volume of main basin and forebay)
�152,831 cu ft (volume detained above the permanent pool)
_ 45,000 cu ft (approximately 20% of total volume)
0 0400 (surface area to drainage area ratio from DWQ table)
425 in (2 to 5 day temporary pool draw -down required)
1 in
85 % (minimum 85% required)
Form SWU-102 Rev 3 99 Page I of 4

Footnotes
I When using the Division SA/DA tables, the correct SA/DA ratio for permanent pool sizing should be computed based upon the
actual impervious % and permanent pool depth Linear interpolation should be employed to determine the correct value for non-
standard table entries
2 In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide
90% TSS removal The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N C Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section 15 A NCAC 2H 1008
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below If a requirement has not been met, attach justification.
Appli is Initials
a The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet)
b The forebay volume is approximately equal to 20% of the total basin volume
c The temporary pool controls runoff from the design storm event
d The temporary pool draws down in 2 to 5 days
NA e If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
calculations)
P� f The basin length to width ratio is greater than 3 1
g The basin side slopes above the permanent pool are no steeper than 3 1
h A submerged and vegetated perimeter shelf with a slope of 6 1 or less (show detail)
i Vegetative cover above the permanent pool elevation is specified
J A trash rack or similar device is provided for both the overflow and orifice
k A recorded drainage easement is provided for each basin including access to nearest right-
of-way
1 If the basin is used for sediment and erosion control during construction, clean out of the
4� basin is specified to be performed prior to use as a wet detention basin
in A mechanism is specified which will drain the basin for maintenance or an emergency
III WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the
vegetated filter if one is provided
This system (check one)
This system (check one)
R does oes not incorporate a vegetated filter at the outlet.
❑ does �OXdoes not incorporate pretreatment other than a forebay.
Form SWU-102 Rev 3 99 Page 2 of 4

Maintenance activities shall be performed as follows
1 After every significant runoff producing rainfall event and at least monthly
a Inspect the wet detention system for sediment accumulation, erosion, trash accumulation,
vegetated cover, and general condition
b Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs
within 2 to 5 days as designed
2 Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash as needed
3 Inspect and repair the collection system (i a catch basins, piping, swales, nprap, etc ) quarterly to
maintain proper functioning
4 Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth (see diagram below) Removed sediment shall be disposed
of in an appropriate manner and shall not be handled in a manner that will adversely impact water quality
(i a stockpiling near a wet detention basin or stream, etc )
The measuring device used to determine the sediment elevation shall be such that it will give an accurate
depth reading and not readily penetrate into accumulated sediments
When the permanent pool depth reads 375 feet in the main pond, the sediment shall be removed
When the permanent pool depth reads 225 feet 1n the forebay, the sediment shall be removed
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 390
Sediment R moval El 36 75 75 o
------------...
-- Sediment Removal Elevation 35 25 75%
Bottom evation 36 0 %-------------------------------=
Bottom Elevation 34 0------------- ----
25°/qr
FOREBAY MAIN POND
5 Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface These
plants shall be encouraged to grow along the vegetated shelf and forebay berm
6 If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment
through the emergency drain shall be minimized to the maximum extent possible
Form SWU-102 Rev 3 99 Page 3 of 4

7 All components of the wet detention basin system shall be maintained in good working order
I acknowledge and agree by my signature below that I am responsible for the performance of the seven
maintenance procedures listed above I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party
Print name Bill Grathwol
Title Manager
Address P O Box 3215, Wilmington, NC 28406�
Phone [phone]
Signature
Date
0
Note The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and
a resident of the subdivision has been named the president
I, Monica V Loughlin , a Notary Public for the State of North Carolina_,
County of New Hanover , do hereby certify that Bill Grathwol
personally appeared before me this �� ' "' day of _April , 2000 , and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements Witness my hand and official seal,
My commission expires
SEAL
08/07/01
Norm S WU- 102 Rev 3 99 Page 4 of 4